I use a Chipex kit, the colour match for my AR130 is better than Alfa's own touch up stick. I do not follow the Chipex instructions but have developed my own technique which leaves a better finish. Firstly I apply the paint to the damaged areas an then leave it for 24 hours. I then inspect the painted areas to see how it has dried. It will usually need a second application which I then leave for another 24 hours. Now I will have raised 'pimples' of paint on the damaged areas. Now, instead of using their blending lotion I apply Autoglym polish and slowly smooth the pimples down to the level of the undamaged paint. I have found that the Chipex blending lotion just strips off the applied paint and leaves the repair with indents.